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By R. Wehrse

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Tarun et al, Depolarization effect in reflection-mode tipenhanced Raman scattering for Raman active crystals. J. Appl. Phys. 103(3), 034309 (2008) 54. com/ 55. S. G. S. Dorozhkin, G. de With J. Loos, Nanotechnology 18, 315502 (2007) 56. W. S. Yeo, T. , Single molecule tip-enhanced Raman spectroscopy with silver tips. J. Phys. Chem. C 111(4) 1733–1738 (2007) 57. S. Yeo, T. Schmid, W. , Towards rapid nanoscale chemical analysis using tipenhanced Raman spectroscopy with Ag-coated dielectric tips. Anal.

Warner N NO2 O 3 + N Toluene, 2h NO2 + 6 CH3NHCH2COOH CH N 1 3 Scheme 2: Synthesis of N D C69 H10 N2 O2 via the Prato reaction scheme N N N N O CH N N N + 6 CH3NHCH2COOH O CH 3 UV 370nm Vis 458nm N N N Toluene, 2 h N N N 4 Scheme 3: Synthesis of photo-switchable dimer N@C60 -azo-C60 and its photoisomerisation with 30% yield. Its EPR signal was found to be approximately 70% of the starting material. The azobenzene moiety is one of the most efficient photoisomerised molecules. Exposed to visible light it is mostly in the trans- form.

Their intrinsic linewidth was measured to be Ä0:3 T. In fact the linewidth is mainly limited by the resolution of the spectrometer and in particular the magnet stability and field homogeneity. The ability of N@C60 to store quantum information effectively is demonstrated by the spin-lattice relaxation time T1 and the phase-coherence time T2 . T2 was measured to be 0:25 ms in CS2 solution at 160 K [38]. Pulse sequences in a typical EPR spectrometer are of the order of 30 ns. This corresponds to more than 104 electron spin Rabi oscillations, before decoherence occurs.

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Accuracy of Element Abundancies from Stellar Atmospheres by R. Wehrse

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